Initial commit - 611 cybersecurity skills across all subdomains

skills/securing-helm-chart-deployments/references/standards.md

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+# Standards and References - Securing Helm Chart Deployments
+
+## NIST SP 800-190
+- Section 4.1: Image vulnerabilities and configuration defects
+- Section 5.2: Registry security and chart provenance
+- Section 5.4: Secure deployment configuration
+
+## CIS Kubernetes Benchmark v1.8
+- 5.2.1-5.2.9: Pod Security Standards enforced via chart defaults
+- 5.7.3: Apply security context to pods and containers
+
+## SLSA (Supply chain Levels for Software Artifacts)
+- Level 1: Documented build process (Helm chart CI)
+- Level 2: Source version controlled, signed provenance
+- Level 3: Hardened build platform, signed artifacts
+- Level 4: Two-party review, hermetic builds
+
+## Helm Security Resources
+
+| Resource | URL |
+|----------|-----|
+| Helm Security Best Practices | https://helm.sh/docs/chart_best_practices/ |
+| Helm Provenance and Integrity | https://helm.sh/docs/topics/provenance/ |
+| kube-linter | https://github.com/stackrox/kube-linter |
+| checkov Kubernetes checks | https://www.checkov.io/5.Policy%20Index/kubernetes.html |
+| helm-secrets plugin | https://github.com/jkroepke/helm-secrets |
+
+## Compliance Mappings
+
+### PCI DSS v4.0
+- Req 6.3.1: Security vulnerabilities identified and managed
+- Req 6.5.1: Changes controlled by change control processes
+
+### SOC 2
+- CC8.1: Change management - Controlled deployment processes

skills/securing-helm-chart-deployments/references/workflows.md

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+# Workflow - Securing Helm Chart Deployments
+
+## Phase 1: Chart Development Security
+1. Set secure defaults in values.yaml (non-root, read-only fs, resource limits)
+2. Add network policy templates
+3. Use external secrets references
+4. Lint with `helm lint --strict`
+
+## Phase 2: CI Pipeline
+1. Render templates: `helm template test ./chart -f values.yaml > rendered.yaml`
+2. Lint: `helm lint ./chart --strict`
+3. Scan: `kube-linter lint rendered.yaml`
+4. Scan: `checkov -f rendered.yaml --framework kubernetes`
+5. Sign chart: `helm package ./chart --sign`
+
+## Phase 3: Deployment
+1. Verify chart signature: `helm verify chart.tgz`
+2. Deploy with production values: `helm install release ./chart -f values-prod.yaml`
+3. Verify deployment: `helm test release`
+
+## Phase 4: Post-Deployment
+1. Validate security contexts: `kubectl get pods -o jsonpath='{.items[*].spec.securityContext}'`
+2. Check network policies applied
+3. Verify secrets sourced from external store
+
+## Phase 5: Maintenance
+1. Update chart versions in lockfile
+2. Rescan after dependency updates
+3. Rotate signing keys annually